package com.example.demo.config;

import com.example.demo.security.*;
import com.example.demo.utils.JwtUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.annotation.Resource;


@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Resource
    LoginFailureHandler loginFailureHandler;
    @Resource
    LoginSuccessHandler loginSuccessHandler;
    @Resource
    CaptchaFilter captchaFilter;
    @Resource
    JwtAccessDeniedHandler jwtAccessDeniedHandler;
    @Resource
    JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;
    @Resource
    UserDetailServiceImpl userDetailServiceImpl;

    @Resource
    JwtLogoutSuccessHandler jwtLogoutSuccessHandler;
    @Bean
    JwtAuthenticationFilter jwtAuthenticationFilter() throws Exception {
        JwtAuthenticationFilter jwtAuthenticationFilter = new JwtAuthenticationFilter(authenticationManager());
        return jwtAuthenticationFilter;
    }

    @Bean
    BCryptPasswordEncoder bCryptPasswordEncoder(){
        return new BCryptPasswordEncoder();

    }

    private static final String[] URL_WHITELIST = {
            "/login",
            "logout",
            "/captcha",
            "/favicon.ico",

    };
     protected void configure(HttpSecurity http) throws Exception{
         http.cors().and().csrf().disable()
                 //登录配置
                 .formLogin()
                   .successHandler(loginSuccessHandler)
                   .failureHandler(loginFailureHandler)
                 .and()
                 .logout()
                 .logoutSuccessHandler(jwtLogoutSuccessHandler)
         //禁用session
                 .and()
                 .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
         //配置拦截规则
                 .and()
                 .authorizeRequests()
                 .antMatchers(URL_WHITELIST).permitAll()
                 .anyRequest().authenticated()

         //异常处理器
                 .and()
                 .exceptionHandling()
                 .authenticationEntryPoint(jwtAuthenticationEntryPoint)
                 .accessDeniedHandler(jwtAccessDeniedHandler)

         //配置自定义的过滤器
                 .and()
                 .addFilter(jwtAuthenticationFilter())
                 .addFilterBefore(captchaFilter, UsernamePasswordAuthenticationFilter.class)


         ;
     }
     @Override
    protected  void configure(AuthenticationManagerBuilder auth) throws Exception{
         auth.userDetailsService(userDetailServiceImpl);
     }




}
